#include<bits/stdc++.h>
using namespace std;
int A[1000010];
int n;
int main()
{
    //freopen(".in","r",stdin);
	//freopen(".out","w",stdout);

cin>>n;
if(n>15)
{
	break;
}
if(n<=15)
{
	cout<<n;
}


	return 0;
}
